which means that you must use an Attribution-Share Alike for stuff you do starting with works under such a license, I would not mind if you used a later version (I don't remember if the V2.0 license allows that automatically) just so long as it is a Free and compatible cc Attribution-Share Alike license.
It would be great if you could attend to this asap so as to avoid causing issues for others who may get a copy from you. (If you can't figure out how to do this I feel certain the archive staff will be able to assist.)
I posted an edit on the other bit. I don't think we should be unable to sort this in a friendly fashion. I am not sure what is up but would be happy to calm things down if they are heated.